fix(gateway): security hardening — auth guards, ownership checks, validation, rate limiting

apps/gateway/src/tasks/tasks.dto.ts

@@ -1,24 +1,103 @@
-export interface CreateTaskDto {
-  title: string;
+import {
+  ArrayMaxSize,
+  IsArray,
+  IsIn,
+  IsISO8601,
+  IsObject,
+  IsOptional,
+  IsString,
+  IsUUID,
+  MaxLength,
+} from 'class-validator';
+
+const taskStatuses = ['not-started', 'in-progress', 'blocked', 'done', 'cancelled'] as const;
+const taskPriorities = ['critical', 'high', 'medium', 'low'] as const;
+
+export class CreateTaskDto {
+  @IsString()
+  @MaxLength(255)
+  title!: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(10_000)
   description?: string;
+
+  @IsOptional()
+  @IsIn(taskStatuses)
   status?: 'not-started' | 'in-progress' | 'blocked' | 'done' | 'cancelled';
+
+  @IsOptional()
+  @IsIn(taskPriorities)
   priority?: 'critical' | 'high' | 'medium' | 'low';
+
+  @IsOptional()
+  @IsUUID()
   projectId?: string;
+
+  @IsOptional()
+  @IsUUID()
   missionId?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(255)
   assignee?: string;
+
+  @IsOptional()
+  @IsArray()
+  @ArrayMaxSize(50)
+  @IsString({ each: true })
   tags?: string[];
+
+  @IsOptional()
+  @IsISO8601()
   dueDate?: string;
 }
 
-export interface UpdateTaskDto {
+export class UpdateTaskDto {
+  @IsOptional()
+  @IsString()
+  @MaxLength(255)
   title?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(10_000)
   description?: string | null;
+
+  @IsOptional()
+  @IsIn(taskStatuses)
   status?: 'not-started' | 'in-progress' | 'blocked' | 'done' | 'cancelled';
+
+  @IsOptional()
+  @IsIn(taskPriorities)
   priority?: 'critical' | 'high' | 'medium' | 'low';
+
+  @IsOptional()
+  @IsUUID()
   projectId?: string | null;
+
+  @IsOptional()
+  @IsUUID()
   missionId?: string | null;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(255)
   assignee?: string | null;
+
+  @IsOptional()
+  @IsArray()
+  @ArrayMaxSize(50)
+  @IsString({ each: true })
   tags?: string[] | null;
+
+  @IsOptional()
+  @IsISO8601()
   dueDate?: string | null;
+
+  @IsOptional()
+  @IsObject()
   metadata?: Record<string, unknown> | null;
 }